diff --git a/include/itkMGHImageIO.h b/include/itkMGHImageIO.h
index a850d32..a3b3497 100644
--- a/include/itkMGHImageIO.h
+++ b/include/itkMGHImageIO.h
@@ -50,7 +50,7 @@ class MGHIO_EXPORT MGHImageIO : public ImageIOBase
   itkNewMacro(Self);
 
   /** Run-time type information (and related methods). */
-  itkTypeMacro(MGHImageIO, ImageIOBase);
+  itkOverrideGetNameOfClassMacro(MGHImageIO);
 
   /*-------- This part of the interfaces deals with reading data. ----- */
 
diff --git a/include/itkMGHImageIOFactory.h b/include/itkMGHImageIOFactory.h
index 85acd89..b9b3e28 100644
--- a/include/itkMGHImageIOFactory.h
+++ b/include/itkMGHImageIOFactory.h
@@ -52,7 +52,7 @@ class MGHIO_EXPORT MGHImageIOFactory : public ObjectFactoryBase
   itkFactorylessNewMacro(Self);
 
   /** Run-time type information (and related methods). */
-  itkTypeMacro(MGHImageIOFactory, ObjectFactoryBase);
+  itkOverrideGetNameOfClassMacro(MGHImageIOFactory);
 
   /** Register one factory of this type */
   static void